After 19 years of marriage, they've certainly faced their fair share of issues. When the sporting great sat down with Lisa Wilkinson on The Sunday Project, he decided to speak out about their relationship.

"I think marriage is always about hard work," the 43-year-old said.

"You know your children, they want your time and they deserve your time, and we are hard working and we feel that is the right way to bring up our children. To prove and to show them that actually, you have to work really hard to be successful."

"You know, we've been married for a long time now and recently did a Vogue front cover, which was all about Victoria's 10 years in fashion," he gushed.

"The amount she's achieved in such a short space of time... four beautiful young children, you know, we have a beautiful dog. But obviously in her business world, to be on the front cover of Vogue, er, was a huge thing. "